Alkyl Ammonium Tungstate Bonded to Fe3O4@SiO2 Nanoparticles; a highly efficient Catalyst for the Oxidation of Symmetrical Sulfides to Symmetrical Sulfoxides
محورهای موضوعی : Iranian Journal of Catalysis
Seyed-Mola Khatami
1
(Department of Chemical Industry, Technical and Vocational University (TVU), Tehran, Iran)
Mehdi Khalaj
2
(Department of Chemistry, Islamic Azad University, Buinzahra Branch, Buinzahra, Iran)
Majid Ghashang
3
(Department of Chemistry, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, Iran)
کلید واژه: Oxidation, Magnetic nanocatalysis, Organic-inorganic hybrids, Symmetrical sulfide, Symmetrical sulfoxide,
چکیده مقاله :
A magnetic organic-inorganic hybrid of Fe3O4@SiO2-functionalized propylpiperazine-1,4-diium tungstate (A) nanoparticles with a spherical structure was prepared and completely characterized by XRD, SEM, TGA-DTA, and FT-IR spectral techniques. The magnetic hybrid was used in the oxidation of symmetrical sulfides to symmetrical sulfoxides under ambient conditions. The excellent yields of sulfoxides, easy operation, and recovery, magnetic properties of the catalyst, and environmentally friendly system are the key advantages of this method.